Marcus Webb

Lead tech on 40+ commercial RTU/VRF service contracts (~1.2M sq ft); cut emergency callbacks 28% via quarterly PM checklist redesign. Diagnosed and repaired reciprocating/scroll chillers and VRF branch boxes; average first-visit fix rate 86%. Commissioned 12 rooftop replacements (15–50 ton) for hotel and outpatient clinic clients; zero punch-list callbacks on last 6 installs. Mentored 3 apprentices on recovery procedures, brazing, and controls troubleshooting (BACnet/Modbus thermostats). Built parts-usage log in spreadsheet that reduced truck-stock stockouts by ~35%.

Installed split systems and package units for retail strip centers and small offices (3–20 ton range). Ran copper line sets, condensate drains, and low-voltage controls; averaged 2.1 installs/week with helper. Responded to after-hours no-cool calls; restored comfort within SLA 92% of tickets. Assisted start-up of 2 multi-zone VRF projects (Mitsubishi/Daikin) including addressing and charge verification.

Supported senior techs on residential changeouts and seasonal tune-ups (~180 calls/season). Learned recovery, vacuum, charging, and airflow balancing; earned EPA 608 Universal in 2016. Maintained van inventory and completed digital work orders same-day.

Relevant training: refrigeration cycles, electrical troubleshooting, brazing, airflow, and safety procedures.

Career and technical preparation; safety, mathematics, and applied shop fundamentals.

OSHA 30-Hour Construction; NATE Core; Forklift / aerial lift familiarity